Product Introduction Hammer drilling machines in series of concrete, brick, stone, wood, etc. drilling, cutting with a chisel function, can be a cutting of operating the electric speed control and positive and functions to operate more handy. Type hand with the handle, in line with the best human engineering design. Fuselage adoption of nylon so that it can be difficult to damage variable in the best new control technology innovation, and establish speed model. As the full impact of improved performance, regardless of how hard concrete, drilling work can be completed quickly. Rubber side handles, can rotate 360, can be very comfortable to complete any of the users. All the requirements of the drilling and cutting of breaking task. Main Characteristics 1. The power input is the best in the light hammer series, it can improve 30% effiency. 2. The rolling housing is durable and not easy to be off. 3. The Copper core for the power wire with 1mm thickness, not easy to be broken. 4. The switch is shakeproof with good quality.